I had to shout to make myself _______ above t...

I had to shout to make myself _______ above the noise.　

高三英语单项填空简单题查看答案及解析

29．Lucy had to shout ___________on the noisy street．

高三英语单项填空简单题查看答案及解析

In the noisy crowd, I had to raise my voice to make myself ___________.

A. hear　　　　　　　　 B. hearing

C. to be heard　　　　 D. heard

高三英语单项填空中等难度题查看答案及解析

Helen had to shout_____.

高三英语单项填空简单题查看答案及解析

.

Birds in cities are damaging their health by trying to sing above the noise of urban life．

New research shows that male birds are trying to compete against traffic and city sounds．They are now singing louder and at higher frequencies，which could harm their vocal cords．Some birds are choosing to sing at night instead of dudng the day．This makes them more open to attack and also creates stress and exhanstion．

“The difference between urban and rural birdsong is becoming so big that the two groups could now be unable to communicate．This could lead to inbreeding and a weak gene pool．”said Dr Sue Anne Zollinger of the University of St Andrews．

According to Zollingar,a bird group with a small geae pool might adapt less quickly to new diseases and could be wiped out．

A study of the dawn chorus found that birds in Berlin sang up to 14 decibels(分贝)louder than those in the forest．The birds sang loudest on weekday momings．

“By trying to sing over the sound of the city,birds are rising vocal injury,”said Zollinger．“All this puts the sarne strain on a bird’s vocal cords as when  ahuman need to shout to be heard—except the birds are doing it all day,every day,”she said．

“Singing under such pressure means birds have less control over the sound they produce． Their songs may lose quality and become more rough—sounding．”said Zollinger．This could make them appear less attractive to female birds．

Mark Constantine，author of The Sound Approach to Birding，said：“Birdsong is important for our quality of life and has been proved to reduce our blood pressure．When we live in the centre of large，urban areas，we get stressed and it's extremely good to have birdsong around us．The impact on humans of birdsong is massive．It harms us，as well as the birds，if their songs become louder and simpler

53．Some birds in cities now choose to sing at night time because_______．

A．they want to attract more birds of opposite sex

B．they are more likely to be discovered by their family

C．they can’t adapt to the loud noises during the daytime

D．they have to frighten their enemy away

54．According to the passage，urban and rural birds might not be able to_______．

A．recognize each other

B  communicate with each other

C  live with each other

D．compete against each other

55．It requires greatest efforts for birds in cities to sing o_______．

A．Monday nights            B．Wednesday afternoons

C．Saturday Evenings         D．Friday momings

56．According to Dr Sue Anne Zollinger,birds singing louder might eventually lead to_______．

A．the harm done to man’s health

B  the dying out of a species

C．the serious damage to the bird’s vocal cords

D．the decrease ofthe birth rate ofa bird group

高三英语阅读理解简单题查看答案及解析

If city noise _______ from increasing, people _______ shout to be heard even at the dinner table 20 years from now.

A. are not kept; will have to B. are not kept; have to

C. do not kept; will have to 　 D. do not kept; have to

高三英语单项填空中等难度题查看答案及解析

Only by shouting at the top of his voice               .

A、was he able to make himself hear

B、he was able to make himself hear.

C、he was able to make himself heard

D、was he able to make himself heard .

高三英语单项填空中等难度题查看答案及解析

The noise _______ by the machine could be heard at night．

A．making         B．made         C．make         D．to be made

高三英语单项填空简单题查看答案及解析

The noise _______ by the machine could be heard at night．

A．making         B．made         C．make         D．to be made

高三英语单项填空简单题查看答案及解析

To move visual technology into the future, sometimes it helps to make a little noise. Researchers have used sound waves to produce floating 3-D images, create a sense of touch and even supply a soundtrack.

Since the 1940s, scientists have toyed with the concept of acoustic levitation(声悬浮), the use of soundwave vibrations to trap tiny things in midair. The technology has gained greater capabilities in the past decade. Some researchers believe this improvement could lead to applications such as contributing to novel 3-D printing methods, or creating displays that would be visible from any angle without requiring a screen.

Other researchers have also worked on visual displays that use acoustic levitation. In addition to visuals, the system can also produce audible noise to give the display a soundtrack. And the ultrasound speakers can also concentrate vibrations in one spot so that a finger might feel a sense pushing back—a little like the object shown by the floating image is really there. Soundwaves create a 3-D display!

Display without a screen is remarkably useful. It means that everybody in the room can see the image—any angle, location—and that’s extremely helpful. As a communications system, such a display might one day allow users to chat with a 3-D projection(投影) of a person who can turn his or her head to follow as they move around a room.

The display will require a lot more work before you can install it in your living room, however. So far, this has been done in the research laboratory. We need to push it a little bit harder. We need to do more analysis to see if it would make sense to create a real display that people would have at home. The current system can only show simple graphics, such as a smiley face or figure eight, in real time.

Still, we are optimistic about the potential for this type of technology. If the system had only one speaker-covered surface instead of two, it could generate images that are bigger than the device itself. We can’t make a TV image that’s bigger than the TV—even a projector has to have a projection screen that’s bigger than the image itself. But with a volumetric(容积的) display, a small, portable device might produce a much larger picture. We can imagine, in the future, having volumetric displays in watches, for example, that create large images that just project out of your watch.

1.From the first two paragraphs soundwave vibrations can be used to _________.

A.catch very small objects in midair

B.develop 3-D printer’s capabilities

C.replace a creative display screen

D.compose soundtracks by making no noise

2.What do we know about display without a screen?

A.It has resulted in visual technology.

B.It is possible to see the image from any direction.

C.It is already ripe to create a real one at home.

D.It has yet to be tested in the research laboratory.

3.What does the last paragraph mainly talk about?

A.Outlooks for the new technology.

B.Situations of the modern technology.

C.Praise for the cutting-edge technology.

D.Room for the technical improvement.

4.What can be a suitable title for the passage?

A.Hearing Is Seeing—Sound Waves Create a 3-D Display

B.Seeing is Believing—3-D Printing Methods Arrive

C.Advancing Sense of Touch—3-D Images Float in the Air

D.Promoting TV Technology—Chat with 3-D Projections

高三英语阅读理解困难题查看答案及解析